Before analyzing this issue, let's first introduce the structure of an LCD monitor. Below is the structure of an LCD monitor and all its components:
1. PANEL (LCD screen)
2. A/D driver board
3. LCD screen drive lines
4. High-voltage board (also known as a boost board, high-voltage strip, or INVERTER)
5. High-voltage board wiring
6. Power adapter (external, usually with a DC 3A/12V output). Some monitors have their switch-mode power supply unit built into the device, which accepts AC 220V input directly.
7. VGA cable
8. Outer casing